code: def t3():
      return torch.tensor([[1.0], [1.0], [1.0]])
  
file_path: FATE/python/fate/test/test_matmul.py
imports: import torch
  from fate.arch.computing.backends.standalone import CSession
  from fate.arch.context import Context
  from fate.arch.federation.backends.standalone import StandaloneFederation
  from fate.arch.tensor import DTensor
  from pytest import fixture
label_desc: Use image node_id 2 for calling a global function with example usage: t3() and returns: torch